Sense 1military officer, officer -- (any person in the armed services who holds a position of authority or command; "an officer is responsible for the lives of his men") => serviceman, military man, man, military personnel -- (someone who serves in the armed forces; a member of a military force; "two men stood sentry duty")

Sense 2officeholder, officer -- (someone who is appointed or elected to an office and who holds a position of trust; "he is an officer of the court"; "the club elected its officers for the coming year") => official, functionary -- (a worker who holds or is invested with an office) => holder -- (a person who holds something; "they held two hostages"; "he holds the trophy"; "she holds a United States passport")